http://skibuilders.com/ and while the process looks anything but simple, I do fancy the idea of building my own skis. I'd actually rather build my own snowboard, and as it turns out there's a "site":http://www.grafsnowboards.com/index.php?url=home dedicated to that as well. The concept for the two processes seems basically the same, although there are obvious differences in where snowboards need strength and flex vs. skis, but I really would like to give it a try. If you happen to live nearer to the beach than the slopes, you can always use this "how-to guide":http://www.surfersteve.com/introduction.htm on building your first surf board out of polystyrene.